We’ve been working on the I39/90 project for a few years now,
and some of the work is finally coming together. In Edgerton, WI two of our staff were able to get out on a boat to view the construction of the Northbound Rock River Bridge. The 54-inch prestressed girders have been set across the bridge, and the forms for pouring the deck are currently in place.
Last week construction crews lowered a 300’ long, 1.2 million pound steel span of the old westbound Interstate 90 Dresbach bridge 70 feet down to a barge in the Mississippi River. This was the second span to be lowered. Last month, crews lowered the eastbound span of I-90. Traffic on the river’s navigational channel west of La Crosse, Wisconsin, was closed while the beam was lowered. To lower the beam, crews used a frame lowering system which used jacks to lower the span at a rate of 30 inches each 15 minutes.
Westbrook was on site for the lowering of the eastbound span.
At the piers, the girders are 22’ deep, which are some of the deepest steel bridge girders in the country. Two 10’ long pieces of the girders will be preserved at Purdue University’s Steel Bridge Research, Inspection, Training, and Engineering Center, S-BRITE.
If you’d like more information about the progress of this project, “like” the Facebook page to stay up-to-date. https://www.facebook.com/DresbachBridge/
Please join me in extending best wishes to Jim Geishirt, who is retiring from Westbrook on May 31st after devoting 26 years to being a productive team member as a Civil Engineering Technician. Jim will be greatly missed by staff and clients alike. We have all benefited from his dedication, knowledge, and hard work. Jim was always the one to step up to the plate when even the smallest tasks needed to be done whether that be for a project or around the office. He will be sorely missed and not easily replaced.
We know you all join us in wishing Jim well as he starts a new chapter in his interesting life. We know he is eager to catch up on the traveling and sailing he loves so much.
Westbrook performed Phase 1 & 2 demolition plans for the removal of the concrete deck and concrete girders. The challenge was setting a 550 TON crane on the existing bridge to remove the bridge slab and girders. WAE analyzed the existing bridge to ensure that the bridge could support the crane outriggers.